martinibuster - 7:55 am on Jul 18, 2011 (gmt 0)
This may or may not solve your problem, but I have experienced something similar with other social media scripts. Sometimes multiple scripts on a page clash- for whatever reason (bad coding, similar code). This can result in display errors in some or all browsers. It can also result in the script not functioning at all. For instance, the AdSense ads scripts can clash with other scripts, rendering other scripts non-functioning or causing the AdSense ads to display strangely.